Critical Security Vulnerability in Firefox Browser

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Firefox Browser Vulnerability

This past week, a new security vulnerability was discovered in the popular web browser, Firefox. If exploited, the vulnerability would allow an attacker to take control of a user’s operating system, allowing full access to the victim’s computer. 

This threat is considered severe enough that the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA) issued a warning to everyone that may be using this browser. It is recommended to be on version 72.0.1 of Firefox or Firefox ESR 68.4.1.

Not sure what version you currently have? Here’s how you can check.

For ADNET clients with Foundations Desktop and/or Server, we are applying these updates for you to all managed devices. If you are not on our Foundations platform and would like assistance, please open a ticket with our TAC team.

To Update Your Browser:

To update your machine manually, please complete the following steps:  

  • On a Mac:
    • Launch Firefox and click About > Firefox 
    • Click the “Restart to update Firefox” button 
  • On a PC:
    • Launch Firefox
    • Go under either Options > Firefox Updates or Options > Advanced > Update to update Firefox. 


Tim Weber

Tim Weber

Tim Weber, Director of Security Services, has been with ADNET since 1994. Over twenty years of technical experience in the field and leadership roles in Service Delivery give him an acute level of insight into clients’ networks and risks to their businesses. In 2018, Tim assumed his current position, responsible for leading ADNET’s dedicated Security practice.

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